Rooms are still available at the Marriott, but you'll be quoted standard rates which are significantly more than the Jamboree discount.

If you're staying at the Marriott, here is some interesting news. It seems that Marriott Rewards members get free "standard" Wi-Fi in their rooms. You would need to make your reservation online, by phone or in person at a Marriott or Ritz-Carlton hotel. (Reservations made through AAA, Priceline or other booking website would not qualify.)

It takes just a moment to sign up for a Marriott Rewards membership, it doesn't cost a cent, and you don't need to provide a credit card number. Even if you stay at Marriott only once this year, at Jamboree, your Marriott Rewards card will save you money.